This print test of the Ultimate Torture Test (from here: https://www.thingiverse.com/thing:3158705) came out very good. The test was originally developed as a collaboration between Kickstarter and Autodesk. I found it is a good benchmark to test a printer's and slicer's capabilities for all sorts of things like bridging, overhangs, dimensional accuracy, etc.

Here's the front view. I had previously removed the round pegs and then put them back in for the picture. The peg test is good for testing how well your printer can hold dimensional accuracy:

Here's an angle view:

Here the round pegs are removed. The tightest peg took a little effort to push out with my thumb:

Here's a side view showing one of the bridging tests. A 0.1 mm feeler gauge is inserted in the gap of the longest bridge. The combination of the TAZ 4 (upgraded to TAZ 6), AeroPro extruder (from IT-Works) and Slic3r Prusa Edition gave pretty good results here:

Here's the spires up close. Excellent results for a 0.5 mm nozzle:

Lastly, here's the underside of some of the bridging. Very nice results on the bridging and overhang:

The slic3r PE version has moved light years beyond where the older slic3r was. The only thing the offshoot slic3r has that PE doesn't yet was the software linear advance feature, which never really worked.

One of the newer versions, Slic3r PE v1.41.1, does have linear advance profiles , but I don't know how good they work:

I found that IT-Works version of Lulzbot's Aerostruder called the AeroPro works so well it doesn't need Marlin's linear advance option at my normal external perimeter speed of 40 mm / sec. I have not yet done any testing on how fast I would need to print inorder to see any benefit from linear advance.

Both the Aerostruder and AeroPro are based on the e3d Titan Aero so they both should give similar results.

I'm running what I think is Marlin's latest release v1.1.9 which has an improved version of linear advance which I might test at higher print speeds.

In all my pictures of prints for this thread no linear advance was used

Last edited by inventabuild on Wed Dec 19, 2018 4:16 pm, edited 3 times in total.

I'll try to make this painless. I attached the config file I created to print on my TAZ 6 the Torture Test you see in the pics. When you download Slic3r PE you s/b able to import my config file from the File menu and see my Print Settings, Filament Settings and Printer Settings in the respective dropdowns:

You can find those settings that need to be modified in one of the three tabs (Print Settings, Filament Settings, Printer Settings).

Please be at your printer ready to switch it off immediately when you first try Slic3r with my profiles because, while I think I covered everything pretty good, it's possible I forgot to mention something important.